class_docstr: Analyse operator event in profiling data, correlate with its device event.
class_docstr_tok: ["Analyse","operator","event","in","profiling","data",",","correlate","with","its","device","event","."]
code: def __init__(self):
      self.items = {}  # for operator summary
      self.items_with_input_shape = collections.defaultdict(dict)
  
file_path: VisualDL/visualdl/component/profiler/parser/operator_parser.py
imports: import collections
  from .kernel_parser import DeviceItem
  from .utils import wrap_tree
label_desc: Use image node_id 1 to create a new OperatorParser object  with example: obj = OperatorParser()